Acetylene-gas burner.



PATBNTED JUNE 12, 190e.

'5. HARRIS. ACETYLENE GAS BURNER.

APPLICATION FILED SEPT.11,1905.

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. 5. This tube is provided with one or more Burners, of which the following is a full, clear,

y end of the burner-casing 12, such lower end UNITED STATES- JOHN HARRIS, OF CLEVELAND, OHIO, ASSIGNOR TO PATENT' OFFICE.

THE J. HARRIS CO.,

Specification of Letters Patent.

Patented June 12, 1906.

Application filed September l1, 1905. Serial No. 277,842.

.Be it known that I, JOHN HARRIs, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful `Improvement'in Acetylene-Gas and exact description, reference being had to the accompanying drawings. My invention relates to illuminating-burners, and particularly to burners wherein illumination is produced by an incandescent mantle. In operating burners of this class with acetylene gas diiiiculty has been experienced, owing to theA liability of the parts to become heated, thereby causing polymerization of the gas with the production of a Smoky flame which carbonizes the mantle, and, further, owing tothe liability of the ga to light back or burn at the gas-supplybfl` nipple or withinthe passages leading froml, the nipple to the space below the mantle. l

The object of the invention is to produce a burner which shall be free from the above d cfects and which'shall be simple and. economical in construction and reliable in operation. Referring to the drawings, Figure 1 represents a vertical section through a burner embodying my invention; and Fig. 2 represents a perspective view, with parts broken away, of a portion of the burner proper. y

Describingthe parts by reference-nun1erals, 1. represents a nipple of oi'dir'iary construction provided n'ith an interior screwthread 2 for connection witha gas-supply pipe and with the discharge-milice 3 at the upper end thereof. This nipple is provided with a reduced exteriorly-thread ed portion 4, to which is screw-threaded the mixing-tube air-inlet openings 6, said openings being controlled by a sleeve 7 of ordinary construction mounted on said tube. lVithin the bore of the tube 5 there is inserted a reducing-sleeve 8, the base of said sleeve being slightly above the openings 6 and the upper end of the sleeve terminating some distance below the top of said tube 5. 9 represents a tube telescopically supported on the tube 5 and carryinUr the burner proper. The lower end of the turbe 9 is Hanged outwardly to support the gallery' 10, and the upper end of said tube is flanged outwardly at 1 1 to support the lower extending somewhat below the top of the mixing-tube 5, said casing 12 being of considerably-greater diameter than said tube and having its lower end flanged inwardly at 13 to engage the upper end of the tube 9. A spider 14 is supported below a bead 15 on the casing 12, the lower ends of the arm of said spider being turned, outwardly at 16 to engage the annular shoulder 18 of the gallery which supports the chimney 17.

`Within the casing 12 is placed the tubular body or member 19, said body or member being spaced a short distance (about one-sixteenth of an inch) from the adjacent inner wall of the casing 12 to form a restricted passage therewith for the major portion of its length. The member 19 may be centered and supportedoperatively to the member 12 by having the lower end 2O thereof spun outwardly to engage the inner wall of sai'd meinber and telescope therein. This enlarged lower portion of the member 19 is of such length as to bring the contracted portion thereof slightly above the top of the tube 5. The upper end of the member 19 is closed, as by an integral cap 21, said cap being conical and slightly concaved on its exterior Surface. A corresponding cap 22 is provided for the upper end of the casing 12, said cap beingr preferably removably fitted thereto and provided with a restricted oriiice 23, at the. upper eitremity thereof. This cap is also preferably concaved exteriorly thereofhand the parts are so arranged as to provide a comparatively narrow space (about one-eighth of an inch) between the caps. The restricted portion of the member 19 between the cap 21 and the base 2() is provided with the horizontally-arranged slits 24. Two sets of such slits are provided, suilicient space being left between the adjacent ends of the two sets of slits to prevent undue weakening of the member. A mantle 25 is supported in operative relation to the cap 23 in any desired manner,

by the ordinary supporting-wire 26. With the parts as above described the operation is as follows: Gas passes through the connection 1 and nipple 3 -into the restricted bores,v the air-supply valve being set to furnish the proper proportion of air through the slots 6. In the case ofacetylene the proportion of air to gas will be thirteen to one. T e

size of the restricted bore 8 is such as to per'- mit the mixture of gas and airto Afiow without friction into the enlarged upper portion of the tube and Iinto the mixing-cberham formed Within the member 19, at the same time maintaining the proper proportion 4between the air and gas to insure proper combustion.

An important part of my invention resides in the width of the slits 24, which are formed in the tubular member 19. I haveffound that the width of these slits should be that of the thickness of 27-gage metal. If the width be increased, even to the thickness of 26-gage metal, there is danger that the mixture will light back within the interior of the tubular member 19. If, on the other hand, the width of these slits is lessened, even to the thickness of gage metal, the flame produced by the burner will be smoky. W ith the slits of the thickness specified, however. neither one of these objectionable results will be produced. From the slits 27 the mix- 'ture flows through the narrow space between the member 19 and the burner-casing 12 into air supplied through 'the slits iiows in contact casin light back.

the space between the caps 21 and 28 and is ignited above the orifice 23. The shallow'- ness of the space between the member 19 and 12 further resists the tendentv to i `urthermore, the upper extension of the -tip 27 of the cap 21 resists such lighting back, as. when flame of a reducing character strikes the tip L? it is immediatelyr extinguished. It will be seen, therefore, that I provide three checks against the danger of lighting back one within the space between the caps 21 and 22, one between the vertical wall's of the tubular member 19 and sleeve 1 2,- andthe third b v-the provision of the slit 24 l of such width asV to prevent llame from passing therethrough.

In addition to preventing lighting back-the narrow space between the member l2) and the casing 12 and the supplying of the fuel mixture therethrough accomplish another important result. '1`he mixture 4of gas and with the fwalls of the member 19 and .casing l2, thereby cooling the same. 'lhe sleeve 12 is further cooled by the upward flow of air in contact with the outer surface thereof produced by the draft ofthe burner. This cooling of the outer surface may be increased by applying to the same and the cap 22 a coating of powdered'material which is non-combustible at the temperature of an atmospheric burner. This material is represented at 28 and beingfpowdered the air-spaces formed between the particles thereof prevent in'agreat measure the 'conduction of heat down the burner-cap and the sleeve or casing 12. There are thus provided three means for cooling the burner casing or sleeve-viz., the application of a cool stream 0f gas and air to the inner wallA thereof, the

Ycoating vof the outer wall with non-conducting'material to prevent in a reatmeasu're" is one of the most serious drawbacks to the use of acetylene in burners of the type herein shown, is entirely avoided by my construction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- I 1. A gaseous-fuel burner comprising a hollow body forming a mixing-chamber, said body having one end thereof closed by a tapered cap, means for supplying gaseous fuel.

to the interior of said body, a burner-casing communicating with said body, said casing having a tapered cap, spaced from the former cap to provide a restricted passage-way therebetween and provided with a central erforation7 substantially as specified.

` 2. ln a gaseous-fuel burner, the combinatiion of a mixing-tube, a tubular member of greater diameter than said tube surrounding the discharge end of the same and having its opposite end closed by a tapered cap, said cap terminating in a point, a casing surrounding said tubular member and extending beyond the end of the same, said casing haviing a tapered cap thereon provided with a central discharge-orilice in axial alinenient with the point of the cap on the said tubular member, said member having a discharge orifice or orifices communicating with the interior of the casing, substantially as specified.

3. A gasmus-iuel burner comprising a mixing-tube, a tubular body into one end of which said tube projects and .having at its other end a cap, a burner-casing surrounding said body and spaced a short distance therefrom to form a restricted annular passageway, said body being provided with narrow slitscommunicating'with said passage-way, and a cap for said casing spaced a short distance from the former cap and having therein a burner-opening, substantially as specilied.

4. A gaseous-fuel burner hating in combination a mixing-tube, a tubular bodyiinto one end of which said tube discharges, a cap for the other end of said body, a burner-casing surrounding said body and forming therewith a restricted annular passage-way, said body being provided with a series of narrow slits arranged transversely thereof and communicating with said passage-way, said series extending from the upper portion of said IOO @eases body to near the lower end thereof, anda burner-cap on 'the burner-casing provided with a restricted outlet,substantially as specified.

5. gaseous-fuel burner comprisin a miXing-tube, a tubular member surroun ing the discharge end of said tube and having its .opposite end closed by a tapering cap and l. provided with lateral slits intermediate said 1o ca) and the discharge end of the mixingtube, a sleeve surrounding said tubular member and forming therewith a restricted passage-way with which. said slits communicate, a cap 'on said sleeve corresponding in I 5 contour to the iirst-mentioned ca and having a restricted discharge orifice. therethrou h, substantially as specified.

6. gaseous-fuel burner com rising a tubular body forming a miXing-clilamber, said 2o body having a conical capat one end thereof and a plurality of outlets through the wall thereof, means for supplying gaseous fuel to the interior of said body, a tubular burnercasing surrounding sail body and forming therewith a restricted annular passage for the gaseous mixture supplied through said outlets, aconical cap on said casing provided with a central perforation therethrough, said cap being substantially parallel with the for- 3oA mer cap and forming therewith a restricted passage-way, substantially as specified.

7. gaseous-fuel burner comprising a mixing-tube, a hollow tubular body of greater diameter than said mixing-tube in axial alinement tl1erewitl1,into the o'werend of which said mixing-tube projects, a cap' for the upper end of said body, said body being provided withr a series of narrow transverse slits extending from below the cap to a point 4o substantially 1n line with the top of the mixing-tube, a tubular burner-casing surround ing said tubular member and spaced a short distance therefrom to provide a restricted Kv .f passage-way the lower end of which extends 45 as far as the lowest, slit in said member, and a cap on said casing having a central perforation therethrough, said cap being substantially parallel with thev former cap and forming a restricted passage-way therewith, sub- 5o stantially as specified.

8. Ina gaseous-fuel burner, the combination of a mixing-tube, a tubular member into one end of which said tube rejects, a conical cap closing the opposite en of said member,

5 5 the outer surface of said cap being concave, a

burnercasing closed at its ower end and surrounding said member to form therewith a restricted annular passage-way, the upper end ol` said casing extending beyond the top 6o of the vertical side wall of the said member, a cap at theupper end of said burne'rdcasin(r corresponding in contour to the cap on said Y. member and having a central perforation therethrough, said member being provided 6 5 with a series of openingsextending from below its ca to a point opposite the bottom of the annu ar passage-way, substantially as specified.

9. A gaseous-fuel burner havingin combination an inner hollow body provided with a series of slits of the width of the thickness of twenty-sevengage metal, and an outer casing receiving the fuel discharged through said slits, substantially as specified.

l0. A gaseous-fuel burner comprisinv a casing having at one end a burner-oriiiee, means for direetinv gaseous fuel in contact with the inner walljof said casing in its passage to said oriiice, and a coating of non-con ducting material applied to the outside of said casing, substantially asspecified.

1l. In a gaseous-fuel burner, the ycombination of a mixing-tube, a vertically-extending burner-casing in communication 'with said mixing-tube, a perforated cap carried by said casing, a mantle in operative relation thereto, a gallery having openings in the lower portion thereof permitting the upward flow of air past said burner-casing, and a coating of powdered material carried by said'casing, substantially as specified. i

12. A gaseous-'fuel burner domprising a vertically-arranged burner-casing havin a burner-opening in the upper end thereo a mantle supported in operative relation to said burner-opening, a perforated gallery below said casing, a chimney carried by said gallery, means for directing gaseous fuel in contact with the inner wall of said casing in its passage to the burner-opening, and a coating of non-conducting material applied to the duter wall of said casing, substantially as specified.

l 13. in a gascous-fuelv burner, the combination of a mixing-eh amber, said chamber having its upper end closed b a tapered cap, a casing or sleeve surroun ing. said chamber and extending beyond the end o f the same, said. casing or sleeve having a tapered cap thereon provided with a central dischar ef oriiiee in axial alin ement with the point of t ie pap on the mixing-chamber, said mixing chamber having a discharge oriiiee or orifices communicating with the' interior of the sleeve or casing, substantially as specified.

14. A gaseous-fuel burner comprising a mixing-chamber having the upper end thereof closed by a tapered cap and provided with a -discharge orifice or orifices in the body thereof, a sleeve or casing surrounding said chamber' and forming therewith a passageway with which said orifice or orifices coin'- municate, said passage-wa lhaving a restricted outlet, a cap on sai l1avin Y ay central restricted. discharge-orifice therethrough, said caps being spaced a Short 'distance apart to provide a restricted pas` sage-way therebetween, substantially as specified.

15. In a gaseous-fuel burner, the combinasleeve or casing' IOO IIO

.Iss

tion of a mixing-tube, a vertically-extendm burner-casing 1n communication. with sai mixing-tube, a perforated cap carried by said casing, a mantle in operative relation thereto, a. gal ery having openings in the lower portion' thereof permitting the upward flow of ai'r along and past said burner-casing, and a coatin of non-conductin material carried by sai casing, substantial y as specified.

16. A gaseous-fuel burner having in combin-ation a discharge-orifice', -a chamber com# municating therewith, said chamber having a tapered cap, a burner-casin in communication with said chamber and, aving a tapered cap provided with a'discharge-orifice in alinem'ent with the'point ofthe cap on the chamber, substantially'as specified.

17. A gaseous-fuel burner having in combination a discharge-orifice, a chamber communicating therewith, said chamber having a tapered cap, aburner-casin 'in communication with said chamber and aving a tapered cap provided with a discharge-oriiice in alinement with the point of the cap; said caps be- 'ing spaced a short distance apart to provide a restricted passageway' therebetween, substantially as specified.

18. A gaseous-fuel burner having in combi# .nation a discharge-orifice,a chamber communicatinU therewith and provided with'd'isvcllrarg'e-outtiets in the side wall thereof,l a

burner-casing forming with said chamber av passage-way having a restricted outlet for the fuel discharged through the chamber, and

a cap for said chamber having a central outlet, substantially as speciiied.

19. A gaseous-fuel burner having in combinatio-n a mixing-tube, a hollow body com- -municating therewith .and forming a chamber, a burner-casing surrounding said body and forming therewith a restrictedV annular passage-Way, said body havin a series 'of l'outlets by'which the mixture 't yerein is discharged into the passage-way, anda cap' for stricted annular passage-way, said body having narrow slits therethrou h, said casi-ng projecting beyond the cham er and having the projecting end thereof provided with a restricted central outlet,l substantially as specified.

In testimony whereof I aiX my signature in the presence of two witnesses.

` JOHN HARRIS.

Witnesses:

J. B. HULL, o B. W. BROCK'ETT. 

